11. Oncopsis alni (Schrank, 1801)

Figs. 108–111

Description. Coloration typical, females similar to males or brown, sometimes with almost reduced dark pattern.

Penis of typical shape, with ventral margin convex in side view (Figs. 108–109). Lower appendage of dorsal connective with very long base, bifurcated, with finely serrated margins of branches, upper branch almost twice as long as lower one, notch between branches narrow, oval (Figs. 109-110). Style parallel-margined, with acute tip (Fig. 111).

Body length (including tegmina): ♂, 5.2–5.6 mm; ♀, 5.6–6.0 mm.

Differs from all other species with convex ventral margin of penis by shape of lower appendage of dorsal connective. Somewhat similar in this trait to O. abdykulovi sp. n., but differs by coloration, larger size, host and distribution.

Host. Alnus glutinosa and A. incana .

Distribution. Europe including European Russia, eastern border of the range is obscure. Records from Japan are erroneous (Okudera, 2008).